Gas-adsorbate collisional effects and surface diffusion in porous materials

摘要: If gas-adsorbate momentum transfer is ignored, calculated surface fluxes within porous materials often can be grossly incorrect. Methods are introduced for including these interactions when calculating in permeability studies. Developments carried out systems with having both uniform and heterogeneous surfaces. These methods complement one developed earlier Wicke-Kallenbach experiments, using Some previous studies then considered. In system, changes the proposed surface-diffusion mechanism from a “hopping” phenomenon to mobility inherent two-dimensional gas. Consideration of other shows that, while very frequently collisional important, experiments occur where they not. A criterion indicating this significant its inclusion surface-flux determinations necessary.